They really need to add some level 50 leves that give you say 1,000 gil per completion or something because currently the 495gil per quest is a tad too low and boring as hell, especially with the repair costs being a bit higher than normal. The money sink in the game is going to kill off the economy in the game is no one has the ability to make gil after level 50, apart from selling materials or items, but players who bought those things will soon be in the same position.

Adding gil from each mob you kill (depending on level)
Adding a gil reward for completing a Duty Finder
Adding new level 50 levequests

Also remove the damn damage cost when doing gathering/crafting.